private GeometryHelper(CornerRadius cornerRadius, Rect bounds)
{
// The CornerRadius must never be larger than the size. Otherwise, the geometry will
// look totally off, since (for instance) an arc is drawn further than the next line segment's destination.
// To avoid this, shrink a too-large CornerRadius to the exact size of the bounds rect.
_cornerRadius = CornerRadiusHelper.ShrinkToSize(cornerRadius, bounds.Size);
_boundsRect = bounds;
}
protected override void OnElementChanged(ElementChangedEventArgs <ContentView> e)
{
base.OnElementChanged(e);
if (e.OldElement != null)
{
return;
}
Control.CornerRadius = CornerRadiusHelper.FromUniformRadius(((ContentViewRoundedCorners)Element).CornerRadius);
}
private void ToggleCornerRadius(object sender, RoutedEventArgs args)
{
var currentRadius = SubjectBorder.CornerRadius;
var newRadius = currentRadius.TopLeft == 0 ?
CornerRadiusHelper.FromUniformRadius(5) :
default(CornerRadius);
SubjectBorder.CornerRadius = newRadius;
ToggleCornerRadiusButton.Content = $"Toggle CornerRadius (current={newRadius.TopLeft})";
StatusTextBlock.Text = newRadius.TopLeft.ToString();
}
private void Button_Click(object sender, RoutedEventArgs e)
{
n++;
MyBorder.CornerRadius = CornerRadiusHelper.FromUniformRadius(n * 5);
}
